Photonics and LED Lighting News

Seeing nanoscale details in mammalian cells

In 2014, W. E. Moerner, the Harry S. Mosher Professor of Chemistry at Stanford University, won the Nobel Prize in chemistry for co-developing a way of imaging shapes inside cells at very high resolution, called super-resolution microscopy. Now, he and his lab have created a new microscope that produces 3-D nanoscale images of mammalian cells in their entirety.

Posted on 23 February 2018 | 1:15 pm

Giant intrinsic chirality from planar dielectric nanostructures

Harvard researchers have developed a metasurface comprising a single planar layer of nanostructures exhibiting strong optical chirality in transmission. This means it can let circularly polarized light of one polarization pass through almost unhindered, while light of the opposite helicity is completely diffracted away. Such capabilities are incredibly useful for a host of applications, including circular dichroism spectroscopy in the analysis of drug samples, and polarization filters in telecommunications.

Posted on 23 February 2018 | 12:20 pm

Researchers turn light upside down

Researchers from CIC nanoGUNE (San Sebastian, Spain) and collaborators have reported in Science the development of a so-called hyperbolic metasurface on which light propagates with completely reshaped wafefronts. This scientific achievement toward more precise control and monitoring of light is highly interesting for miniaturizing optical devices for sensing and signal processing.

Posted on 23 February 2018 | 12:03 pm

IBM reveals novel energy-saving optical receiver with a new record of rapid power-on/off time

With the increasing popularization of datacenters and other bandwidth hungry interconnect applications, today's bandwidth growth of short-distance optical networks demands data transmission speeds of more than 100 Gb/s, calling for the development of energy-efficient, multi-channel optical links with fast data transfer rates.

Posted on 22 February 2018 | 5:55 pm

Noninvasive optical sensors provide real-time brain monitoring after stroke

Each year, nearly 800,000 people in the U.S. experience a stroke, and almost 90 percent of those are ischemic strokes in which a clot cuts off blood flow to part of the brain. To prevent further injury, blood flow to the brain must be restored as quickly as possible. In a new study, researchers show that non-invasive optical sensors can provide clinicians with real-time feedback on whether clot busting treatments are restoring blood flow. The technique, which monitors blood flow and oxygen levels in the brain, could also reveal early warnings signs of neurological complications after a stroke.

Posted on 22 February 2018 | 1:43 pm

Observing and controlling ultrafast processes with attosecond resolution

Many chemical processes run so quickly that they are only roughly understood. To clarify these processes, a team from the Technical University of Munich (TUM) has now developed a methodology with a resolution of quintillionths of a second. The new technology could enhance the understanding of processes like photosynthesis and contribute to the development of faster computer chips.

Posted on 21 February 2018 | 11:03 am

Reaching new heights in laser-accelerated ion energy

A laser-driven ion acceleration scheme, developed in research led at the University of Strathclyde, could lead to compact ion sources for established and innovative applications in science, medicine and industry.

Posted on 20 February 2018 | 9:00 pm

Using a laser to wirelessly charge a smartphone safely across a room

Although mobile devices such as tablets and smartphones let us communicate, work and access information wirelessly, their batteries must still be charged by plugging them in to an outlet. But engineers at the University of Washington have for the first time developed a method to safely charge a smartphone wirelessly using a laser.

Posted on 20 February 2018 | 8:17 pm

MEMS chips get metatlenses

Lens technologies have advanced across all scales, from digital cameras and high bandwidth in fiber optics to the LIGO lab instruments. Now, a new lens technology that could be produced using standard computer-chip technology is emerging and could replace the bulky layers and complex geometries of traditional curved lenses.

Posted on 20 February 2018 | 8:10 pm

Add-on clip turns smartphone into fully operational microscope

Australian researchers from the ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) have developed a 3D printable 'clip-on' that can turn any smartphone into a fully functional microscope.

Posted on 20 February 2018 | 7:36 am

Hire Carpet Cleaning In Newport Beach And Have Stunning Results

Hiring the best carpet cleaning in Newport Beach is something you should certainly consider. Especially if you will find and avail services from reliable carpet cleaners, you can surely have stunning results afterwards. Aside from making your carpet completely clean, it can also help in keeping your precious furniture on its top condition. Why should ...

Posted on 20 February 2018 | 3:36 am

Computers aid discovery of new, inexpensive material to make LEDs with high color quality

A team led by engineers at the University of California San Diego has used data mining and computational tools to discover a new phosphor material for white LEDs that is inexpensive and easy to make. Researchers built prototype white LED light bulbs using the new phosphor. The prototypes exhibited better color quality than many commercial LEDs currently on the market.

Posted on 19 February 2018 | 5:00 pm

You Will Become The Talk Of Town

If you are planning a vacation with your family and ensuring that it is something you are sure to enjoy there is definitely a lot of pressure but if you want to make sure that you get the best out of the holiday that you have planned then you might want to consider renting out ...

Posted on 19 February 2018 | 11:31 am

A Simple Guide to Sewing Machines for Beginners

A quick glance at any shop that supplies sewing machines, whether they’re online of physical shops, tell you that there are dozens and dozens of sewing machines available. Each have they own specialization, uses, model, durability, brand and so on. Will you be needing all of them? No, but the majority of beginners will make ...

Posted on 19 February 2018 | 12:09 am

Try Out Your Hand At Sewing

There are various kinds of sew art fabric that you will find in the market. Some of the sew strips are stronger and used to design and create items such as ornaments and key chains and so on. You could choose to buy these fabric strips readymade. Ideally it’s always a good idea to buy ...

Posted on 18 February 2018 | 10:37 am

Things That You Never Expect On Data Recovery Applications

Are you an Android user? If yes, then you definitely delete some items by mistake. There are various kinds of things which we save into our phone such as images, videos and so on. No doubt, people search the best ideas in order to recover the entire delete data. When we lost the data then ...

Posted on 18 February 2018 | 9:26 am

Cryptocurrency – Either Invest In It Or Not?

The most burning questions nowadays are that it is worth investing in the crypto currency or not, the answer of these questions is depending upon a lot of situations. Well, one recommendation from the professionals is that always go through the ICO news before planning the investment. Going through it will help to acknowledge the ...

Posted on 17 February 2018 | 7:42 am

Golf Clash Cheats – 100% Safe And Easy To Use

Every gamer is looking for a perfect game which become his/her amusement sources. Golf clash proves a superb game which is played by many players and they really get addicted to it because of its amazing and exclusive gameplay. You are able to play 1v1 real time gameplay in the golf clash. Simply start playing ...

Posted on 14 February 2018 | 1:51 pm

Powerful LED-based train headlight optimized for energy savings

Researchers have designed a new LED-based train headlight that uses a tenth of the energy required for headlights using conventional light sources. If operated 8 hours every day, the electricity savings of the new design would reduce emissions of the greenhouse gas carbon dioxide by about 152 kilograms per year.

Posted on 13 February 2018 | 5:59 pm

Transportable optical clock used to measure gravitation for the first time

A European collaboration involving clock experts from the National Physical Laboratory (NPL), the Physikalisch-Technische Bundesanstalt (PTB) and the Istituto Nazionale di Ricerca Metrologica (INRIM) has used a transportable optical atomic clock to measure gravitation for the first time. The results of the experiment were published in Nature Physics.

Posted on 13 February 2018 | 11:26 am

Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

Posted on 12 February 2018 | 8:05 pm

You Can Safely Use Pepper Spray

You only live once and this is why it is important for you to enjoy life but it is also important for you to stay safe and safety is something that people usually ignore specifically when they are at a younger age. While people care about the safety of women and often advice women to ...

Posted on 12 February 2018 | 10:57 am

Use Double Glazing Today

Whitstable Double Glazing is one of the leading methods of insulating a home these days. If you are wondering why this method of home insulation is becoming so popular you need to learn all about it online. There are a number of reasons people prefer to get double glazing into their homes. If you are ...

Posted on 12 February 2018 | 2:00 am

Ceramic Disc Capacitors: Highly Practical Capacitor

Capacitors are extremely important in each electronic devices, regardless of the device being big or small. It helps in storing energy, and release it on a smoother way to avoid huge surge of energy breaking through the device. Capacitors comes in many forms, and one of the most practical choice is the ceramic disc capacitors. ...

Posted on 11 February 2018 | 9:51 am

'Optically pumped' laser closer to improving processing speed of sensors

Imagine creating a material for the digital information highway that allows a fast lane of laser light that zips data past the traditional silicon chips.

Posted on 9 February 2018 | 12:52 pm

Microscope combines confocal microspectroscopy and 3-D scanning probe nanotomography

Researchers at the National Research Nuclear University MEPhI (Russia) and international colleagues have proposed an original approach to nanoscale 3-D analysis of materials. Their results are published in Ultramicroscopy.

Posted on 9 February 2018 | 12:16 pm

Metasurfaces enable improved optical lens performance

Producing the perfect color images we need and love often requires multiple, heavy lenses so that each color focuses in exactly the same plane. Now Penn State engineers have developed a new theory that solves the problem using a single thin lens comprised of gradient index materials and metasurface layers to properly direct the light.

Posted on 9 February 2018 | 8:01 am

Breakthrough in controlling light transmission

Operation of modern-day technology requires an ever-increasing use of broadband frequency signals. This, in turn, has grown the demand for reliable, efficient methods of signal transmission that prevent interference and are more efficient in their use of the scarcely available frequency spectrum. These requirements are constrained, however, by reciprocity—a law of physics that forces the transmission of light to be identical in opposite directions.

Posted on 8 February 2018 | 4:00 pm

Intense laser experiments provide first evidence that light can stop electrons

By hitting electrons with an ultra-intense laser, researchers have revealed dynamics that go beyond 'classical' physics and hint at quantum effects.

Posted on 7 February 2018 | 4:00 pm

Researchers take terahertz data links around the bend

An off-the-wall new study by Brown University researchers shows that terahertz frequency data links can bounce around a room without dropping too much data. The results are good news for the feasibility of future terahertz wireless data networks, which have the potential to carry many times more data than current networks.

Posted on 6 February 2018 | 5:40 pm

The future of wireless communications is terahertz

Electrical and optical engineers in Australia have designed a novel platform that could tailor telecommunication and optical transmissions. Collaborating scientists from the University of New South Wales in Sydney and Canberra, the University of Adelaide, the University of South Australia and the Australian National University experimentally demonstrated their system using a new transmission wavelength with a higher bandwidth capacity than those currently used in wireless communication. Reported this week in APL Photonics, these experiments open up new horizons in communication and photonics technology.

Posted on 6 February 2018 | 5:28 pm

Researchers create fiber optic sensors that dissolve in the body

For the first time, researchers have fabricated sensing elements known as fiber Bragg gratings inside optical fibers designed to dissolve completely inside the body. The bioresorbable fiber Bragg gratings could be used for in-body monitoring of bone fracture healing and for safer exploration of sensitive organs such as the brain.

Posted on 5 February 2018 | 5:03 pm

Innovative diode design uses ultrafast quantum tunneling to harvest infrared energy from the environment

Most sunlight striking the Earth is absorbed by its surfaces, oceans and atmosphere. As a result of this warming, infrared radiation is emitted constantly all around us-estimated to be millions of Gigawatts per second. A KAUST team has now developed a device that can tap into this energy, as well as waste heat from industrial processes, by transforming quadrillionth-of-a-second wave signals into useful electricity.

Posted on 5 February 2018 | 3:25 pm

New source found for ultra-short bursts of light

Although critical for varied applications, such as cutting and welding, surgery and transmitting bits through optical fiber, lasers have some limitations – namely, they only produce light in limited wavelength ranges. Now, researchers from the Ginzton Lab at Stanford University have modified similar light sources, called optical parametric oscillators, to overcome this obstacle.

Posted on 2 February 2018 | 1:37 pm

Applying topological physics to lasing creates more highly efficient and robust lasers

Israeli and US researchers have developed a new, highly efficient coherent and robust semiconductor laser system: the topological insulator laser.

Posted on 2 February 2018 | 12:17 pm

Electro-mechano-optical NMR detection

An international research project led by Kazuyuki Takeda of Kyoto University and Koji Usami of the University of Tokyo has developed a new method of light detection for nuclear magnetic resonance (NMR) by up-converting NMR radio-frequency signals into optical signals.

Posted on 2 February 2018 | 10:40 am

Integrated metasurface converts colors of light over broadband inside a waveguide

One of the biggest challenges in developing integrated photonic circuits—which use light rather than electrons to transport information—is to control the momentum of light. Colors of light travel at different speeds through a material but in order for light to be converted between colors, it needs to have the same momentum or phase.

Posted on 1 February 2018 | 3:09 pm

How astronomers can leverage fiber nets and listen to deep space

For the first time, researchers have demonstrated that a stable frequency reference can be reliably transmitted more than 300 kilometers over a standard fiber optic telecommunications network and used to synchronize two radio telescopes. Stable frequency references, which are used to calibrate clocks and instruments that make ultraprecise measurements, are usually only accessible at facilities that generate them using expensive atomic clocks. The new technology could allow scientists anywhere to access the frequency standard simply by tapping into the telecommunications network.

Posted on 1 February 2018 | 3:00 pm

Research gives optical switches the 'contrast' of electronic transistors

Current computer systems represent bits of information, the 1's and 0's of binary code, with electricity. Circuit elements, such as transistors, operate on these electric signals, producing outputs that are dependent on their inputs.

Posted on 31 January 2018 | 8:22 pm

Speed of light drops to zero at 'exceptional points'

Light, which travels at a speed of 300,000 km/sec in a vacuum, can be slowed down and even stopped completely by methods that involve trapping the light inside crystals or ultracold clouds of atoms. Now in a new study, researchers have theoretically demonstrated a new way to bring light to a standstill: they show that light stops at "exceptional points," which are points at which two light modes come together and coalesce, in waveguides that have a certain kind of symmetry.

Posted on 31 January 2018 | 2:30 pm